Chip antenna

Abstract

A chip antenna includes a main body having a first surface and a second surface; a microstrip structure disposed on the first surface and the second surface of the main body; and at least one metal piece which is disposed in the main body and located between the first surface and the second surface, the metal piece is electrically connected with the microstrip structure. Since the area of the metal piece is almost equal to that of the first surface or the second surface of the main body, therefore the metal piece can increase the radiation area of the chip antenna greatly so that the chip antenna have greater bandwidth and better electrical characteristics.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a chip antenna, and more specifically to a chip antenna with a metal piece.[0003]2. Description of Related Art[0004]With the rapid development of wireless communication industry, most of the electronic products (for example, mobile phones, personal digital assistants, notebook computers, sensing equipments, etc.) transmit signals via wireless communication. Antennas disposed on electronic products act as one primary type of equipment for transmitting and receiving signals in wireless communication. Therefore the popularity and needs for antennas are constantly increasing.[0005]For reducing manufacture costs of antennas and meeting design requirements that the electronic products must be smaller, lighter, and thinner, most of the electronic wireless communication products replace conventional antennas that has large volume (for example, rod antenna) with chip antennas with smaller volume....

AI Technical Summary

Benefits of technology

[0009]A main object of the present invention is to provide a chip antenna which can increase the area for transmitting and receiving wireless signals based on a metal piece, so that the bandwidth of the chip antenna can be increased.

[0011]The efficacy of the present invention is as follows: the area of the metal piece is almost equal to that of the first surface or the second surface of the main body, therefore the metal piece can increase the radiation area of the chip antenna greatly so that the chip antenna have greater bandwidth and better electrical characteristics.

Problems solved by technology

Chip antennas have the advantage of small volume; however, small volume also limits the length of the micro strips, so that the radiation areas of chip antennas are obviously smaller than those of conventional antennas.

Therefore bandwidth of chip antennas is limited.

However, the above methods are all limited in increasing the length of micro strips and the radiation areas of chip antennas, so they are limited in improving the bandwidth of micro strips.

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